Wider/deeper should increase flow.

O2 plasma will not last indefinitely.

Marco
==============================================
Marc Reinig                           Phone: (831) 459-4362
Laboratory for Adaptive Optics        Fax:   (831) 459-5717
UCO/Lick Observatory                  Email: mreinig@ucolick.org
University of California, Santa Cruz
1156 High Street
Santa Cruz, CA 95064


> -----Original Message-----
> From: mems-talk-bounces@memsnet.org [mailto:mems-talk-
> bounces@memsnet.org] On Behalf Of Shane GUO
> Sent: Saturday, March 03, 2012 12:40 PM
> To: mems-talk@memsnet.org
> Subject: [mems-talk] high resistance of PDMS channels
>
> Hi all,
>
> I am making microchannels with PDMS for guiding flow. The liquid is driven
by
> electroosmosis. Without the channel I can see the liquid moving using
latex
> particles, while nothing could be seen with channels on. I reckon this is
due
> to the high hydraulic resistance. Will it be better if PDMS is treated by
O2
> plasma and becomes hydrophilic? I will also increase the channel height.
Will
> this also help?


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